Here is an algorithm for calling a friend on the telephone: Step Operation 1. Dial the phone and wait for either an answer or a busy signal If the line is not busy then do Steps 3 and 4 Talk as long as you want Hang up the phone, you are done Otherwise (the line is busy) Wait exactly 1 minute 2. 3. 4. 5. 6. 7. Go back to Step 1 and try again During execution, this algorithm could get into a situation in which, as in the deadlock problem, no useful work can ever get done. Describe the problem, explain why it occurs, and suggest how it could be solved.
Here is an algorithm for calling a friend on the telephone: Step Operation 1. Dial the phone and wait for either an answer or a busy signal If the line is not busy then do Steps 3 and 4 Talk as long as you want Hang up the phone, you are done Otherwise (the line is busy) Wait exactly 1 minute 2. 3. 4. 5. 6. 7. Go back to Step 1 and try again During execution, this algorithm could get into a situation in which, as in the deadlock problem, no useful work can ever get done. Describe the problem, explain why it occurs, and suggest how it could be solved.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Here is an algorithm for calling a friend on the telephone:
Step Operation
1. Dial the phone and wait for either an answer or a busy signal
2.
If the line is not busy then do Steps 3 and 4
3.
Talk as long as you want
4.
Hang up the phone, you are done
5.
Otherwise (the line is busy)
6.
Wait exactly 1 minute
7.
Go back to Step 1 and try again
During execution, this algorithm could get into a situation in which, as in the deadlock problem, no useful work can ever get done. Describe the problem, explain why it occurs, and suggest
how it could be solved.
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